EVOLUTION OF SERVICE QUALITY MANAGEMENTTHROUGH CLOSED LOOP AUTOMATION

Yvon ROUAULTWireless Advisor / CTO Office

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Virtualized Network—The Vision

If You Can’t Assure It in an Agile Way,

You Can’t Virtualize It

So how can services that are created in a

dynamic environment be assured upon delivery?

By proper integration of service assurance tools

with network/service orchestration

These Days, Testing Is Based on Silos

EMS

OSS/BSS

Verifiers

Analytics

(Domain-Specific)

Video

DPI

Active Test

Systems

EXFO|Worx

NOCNetwork / Service Quality

Group4

Service Activation

and Billing

Passive

Monitoring

Wireless

Group1Group2Group3

Service

Assurance

Domain

(*) fault, configuration, accounting,

performance, securityTAP

Analytics

(Cross-Domain)

(e.g, VoLTE)

Probe

NENE

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Network Management

System (FCAPS*)

• Operational silos (dev-ops not possible)

• Each SA system is geared to a specific domain or service; no E2E

• Too many probes; high cost of overlay monitoring network

• Troubleshooting is complicated (swiveling chair)

• Adding assurance for a new service is very time consuming

• Overlap between EMS/NMS functions and SA functions

Issues with Current Organization

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Addressing Challenges Through the Lifecycle

VNF Infrastructure Assurance

End-to-End Service Assurance

Pre-Launch Testing

(Simulation)

New Service Validation

Service ProvisioningBirth Certificate

Troubleshooting

ELASTICITY

MULTI-TENANT

PORTABILITY

RESILIENCY

SECURITY

QoS/QoE

VNF AND PNF MIX

SERVICE CONTINUITY

SERVICE CHAINING

Self-HealingResource Upgrade

Scaling

Life Cycle

QA Testing

CI/CDDevOps

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How can we do things

differently in NFV?

With automated testing!

Assurance Automation—Targets

TEST AND

PERFORMANCE

• Deploy “active” and “passive” test

functions in key locations

• Test performance “before and

after” service chain is “turned-up”

by emulating user session

• Predictive analytics to ensure QoE

by monitoring end-to-end

performance of infrastructure and

service

INTEGRATED INTO

SERVICE ORCHESTRATION

• Enable rapid turn-up by

embedding test instrumentation in

host devices

• Validate that service performance

meets SLAs as part of end-to-end

service orchestration

• Enable end-to-end service

assurance and optimization

through immediate access to

relevant data

OPEN AND

FUTURE-PROOF

• Open interfaces for ease of

integration

• Vendor agnostic end-to-end test

capabilities

• Proven integration with MANO

vendors

OSS/BSS

8

Reference Architecture—Service and Assurance Modeling

Service

Model KPIs

Test Result Analytics

Service Template

EXFO

Test Automation Center

Assurance enriched template

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Real-Time End-to-End

Service Experience Analytics

Service

Service Orchestration

(Virtualized) Network FunctionManagement and Orchestration

Test VNFsTest VNFs

Test VNFs

Test VNFsTest VNFs

VNF List Test VNFs

Test VNFsVNF List

Test VNFsTest VNFsSLA

Thresholds

Test VNFsTest VNFsEnd Points

(KPI’s and Actions)

Service

Test VNFsTest VNFsEnd Points

(KPI’s and Actions)

Test VNFsTest VNFs

Turn-up Actions

Test VNFsTest VNFsSLA

Thresholds

Test VNFsTest VNFsSLA/KPI

Monitors

Reference Architecture—Service and Monitoring Instances

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VNF Configuration

Test Configuration

VNF Data Third-PartyProbe Domain Controllers

Monitoring Domain ControllerNetwork Domain Controller

Physical Network

Closed Loop SQM

Network-Based API’s

TrafficSimulator

Passive vProbe

Instantiate Probes

Service Chain

Instantiate Service Chain

VNF1 VNF2 VNF3

Service Orchestration

(Virtualized) Network FunctionManagement and Orchestration

OSS/BSS Enterprise

Self-Care PortalOperator Portal

Real-Time End-to-End

Service Experience Analytics

Passive vProbe

Dynamic Service Models Yang/Tosca

Test Automation Controller

The elimination of EMS’s/NMS’s role in assurance

The service assurance scope will expand to cover (FC…PS):

fault, configuration, performance, security

• The “accounting” function will be conducted by the service/network orchestrator

Decoupling probes from the service assurance application

• All monitors (active, passive, embedded, VNF, NFVI) are services instantiated on demand by any service assurance

application

Service assurance applications will cover:

• Infrastructure assurance (vIMS, vDNS, vEPC, etc.)

• End-to-end service specific assurance (end-to-end orchestrated service)

• Assist orchestrator in (self healing, scaling, policies, etc.)

• Feed to service analytics

Architecture Trend

(1) fault, configuration, performance, security

11

Case Study—vCPE

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BUSINESS ETHERNET

SERVICE (vCPE)

Innovative automation of turn-up

certification and problem isolation to

enable service providers to go beyond

the demarcation point at zero truck rolls

Customer portal access to visualize

and test network health and rich

communications services for further

cost reductions

Benefits of Virtual Active Probes

IN THE CONTEXT OF

VIRTUALIZED NETWORKS

Expectations

• Not to disrupt the on-demand experience when virtual networks are

created dynamically

– Birth certificates for new services will need to be issued in a timely manner

– Certify the end-to-end quality of the service (at any time)

Operators gain several benefits from using virtual active probes

• Accurate, fine-grained view of service availability and performance

• Certification speed

• Low-cost certification

• Improved customer satisfaction

• Customer self-service

Agi le NFV/SDN Assurance

Key Takeaways

NFV AND SDN HOLD PROMISE…

• Service agility, faster time to market, lower operational costs…

BUT ALSO CREATE CHALLENGES

• Real-time management across physical and virtual realms

• Ability to collect data from multiple sources

• Ability to take a holistic, proactive view of the network

ASSURANCE MUST BE INTEGRATED

INTO SERVICE ORCHESTRATION

• To enable rapid turn-up by embedding test instrumentation in host devices

• To validate that service performance meets SLAs as part of end-to-end service orchestration

• To enable end-to-end service assurance and optimization through immediate access to relevant data

yvon.rouault@EXFO.com

Thank You! | Danke Schön! | Merci!